Doing missions for the mad scientist fellow. I nearly ran out of bullets and health packs trying to complete his mission, but luckily, I made it. Whew...
Alright! It was tough as I had a hunter alien on my heels the whole time, but I was able to reach Nicole, who was attached to the Marker. I defeated her (eventually) and made my escape with Ellie. What a cool game. Final boss and game ending! Great stream!